Group items tagged

Watch. Practice.
Learn almost anything for free.
With a library of over 2,400 videos covering
everything from arithmetic to physics, finance, and history and 125 practice exercises, we're on
a mission to help you learn whatever you want, whenever you want, at your
own pace.

The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. They are complementing Salman's ever-growing library with user-paced exercises--developed as an open source project--allowing the Khan Academy to become the free classroom for the World.

The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. Despite being the work of one man, Salman Khan, this 2100+ video library is the most-used educational video resource as measured by YouTube video views per day and unique users per month.